gpg --edit-key D63913EF50D0AE60
Typing "minimize" at the "command>" prompt returned:
"User ID "name <email>": 1 signature removed";
and returned me to "command>" where a "save" command saved changes, quit GPG and returned me to my shell prompt.
The key's self-signature was intact and the unwanted personal key signature was gone.
gpg --keyserver pgp.mit.edu --recv-keys D63913EF50D0AE60
gpg --armor --export D63913EF50D0AE60 | apt-key add -
sudo apt-get update
but always:
Err:5
http://www.vollstreckernet.de/debian testing InRelease
Le seguenti firme non erano valide: B919EDA5D731B5D850E6E7C1D63913EF50D0AE60
Lettura elenco dei pacchetti... Fatto
W: Errore GPG:
http://www.vollstreckernet.de/debian testing InRelease: Le seguenti firme non erano valide: B919EDA5D731B5D850E6E7C1D63913EF50D0AE60
E: The repository '
http://www.vollstreckernet.de/debian testing InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(
manpage for repository creation and user configuration details.